Cambridge SoundWorks Newton Series MC50 Satellite Speaker (Slate) (Discontinued by Manufacturer) Speaker Dimensions: 4 1/2" H x 4 1/4" W x 5 1/2" D Keyhole slots and threaded inserts for wall-mounting Neodymium-magnet motor structure Frequency range: 150Hz--16kHz 10-year Manufacturer's Warrantee